20665449

素因数分解:

$3^5\times 7^1\times {\mathrm{12149}}^1$

素因数の和:12171

約数の個数: 24

約数和(自身を含む): 35380800

約数和(自身を除く): 14715351

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12149, 36447, 85043, 109341, 255129, 328023, 765387, 984069, 2296161, 2952207, 6888483, 20665449]

約数ペア:

[(1, 20665449), (3, 6888483), (7, 2952207), (9, 2296161), (21, 984069), (27, 765387), (63, 328023), (81, 255129), (189, 109341), (243, 85043), (567, 36447), (1701, 12149)]